JPS63127026A - Cooling device for high frequency heating device - Google Patents

Abstract

PURPOSE:To reduce a cost by reducing the volume of a body, by a method wherein cooling structure is formed such that two magnetrons, two high voltage transformers, one centrifugal fan, and one propeller fan are arranged to the one side of a heating chamber. CONSTITUTION:Cold air sucked through a suction port 15 with the aid of a centrifugal fan cools a high voltage transformer 9, and is sucked in a centrifugal fan 7. Since cold air exhausted from the centrifugal fan 7 passes an air guide 8 and independently cools magnetrons 5 and 6, it passes exhaust guides 11 and 12 and is exhausted by means of exhaust ports 13 and 14 formed in the back of a body. Another high voltage transformer 10 is situated in a position in the vicinity of an exhaust port 14b formed at the lower part of the back of the body. A part of cold air sucked with the aid of the centrifugal fan 7 is discharged against the high voltage transformer 10 by means of a propeller fen 17 and a fan heater 18, and after the high voltage fan 10 is cooled thereby, the cold air is exhausted through the exhaust port 14b to the outside of the body. This constitution enables all source perts to be situated to the one side of a heating chamber, resulting in reduction of the volume of the body.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cooling structure for a high frequency heating device.

2 Conventional technology In recent years, the cooling structure of high-frequency heating equipment uses a centrifugal fan to cool power components such as magnetrons and high-voltage transformers. is being exhausted.

An example of the cooling structure of the conventional high-frequency heating device described above will be described below with reference to the drawings.

FIG. 4 shows a perspective view of the internal structure of the cooling structure of the high-frequency heating device as seen from the back side of the main body. In FIG. 4, from the air intake port 15 provided in a part of the bottom plate 19 of the main body
2fli with cold air sucked in by centrifugal fans 7a and 7b! Cool the high voltage transformer 9.10 of il, 2@
The magnetrons 5.6 connected to centrifugal fans 7a and 7b are respectively cooled, and then the respective exhaust guides 11 are cooled.
．． 12 and is discharged to the outside of the main body from exhaust ports 13 and 14. Arrows represent wind flow.

Problems to be Solved by the Invention However, in the above configuration, the Macnetrons 7a and 7b are mounted on the side and rear side of the main body heating chamber 1 in order to accommodate the centrifugal fans. However, there were problems in that the volume of the main body was large and two centrifugal fans were used.

In view of the above problems, the present invention includes one centrifugal fan and an inexpensive propeller fan (about 1/4 the cost of a centrifugal fan).
To provide a high-frequency heating device that cools at 11 hardness and further has a 21 hardness magnetron, two high-pressure transformers, a centrifugal fan, and a propeller fan arranged on one side of the heating chamber, and can reduce the volume of the main body. It is.

Means for Solving the Problems In order to solve the above problems, the cooling structure of the high frequency heating device of the present invention includes two bolt magnetrons and two bolts on one side of the heating chamber.
It is equipped with a fli'il high-pressure transformer, one centrifugal fan, and one propeller fan.

Operation According to the above-described structure, the present invention has one high-voltage transformer placed near the completion port on the front of the main body, a centrifugal fan mounted above the high-voltage transformer, and the high-voltage transformer cooled by the suction force of the centrifugal fan.

The centrifugal fan is connected to the two bar magnetrons by an air guide, and the exhaust air from the centrifugal fan cools the two magnetrons, passing through each exhaust guide and being discharged from the exhaust port on the back of the main body. In this case, the cooling efficiency of the high voltage transformer is further away than the centrifugal fan and closer to the exhaust port, so the hot air exhausted from the McNetron flows backwards from the exhaust port, resulting in a higher intake temperature, and the high voltage transformer has a lower wire diameter and core size. The two large high-voltage transformers cannot be shared.

A propeller fan is installed on the intake port side to cool the high voltage transformer.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

FIG. 1 is an internal perspective view of the cooling structure of the high-frequency heating device of the present invention as seen from the front of the main body, FIG. 2 is a side view thereof, and FIG. 3 is a front view thereof.

In the figure, 1 is the heating chamber, 2 is the door, 3 is the upper part, 5 is the PENO waveguide, 4 is the lower waveguide, 5 and 6 are the magnetrons, 7 is the centrifugal fan, and 8 is the connection between the centrifugal fan 7 and the magnetrons 5 and 6. Air guide, 9 and 10 are high voltage transformers, 11 and 12 are exhaust guides from magnetrons 5 and 6, 13 and 14
Reference numerals a and 14b designate an exhaust port, 15 a stuttering port provided on the front surface of the main body, 16 a leg of the main body, 17 a propeller fan, and 18 a fan motor that drives the propeller fan 17.

The operation of the cooling structure of the high-frequency heating device configured as described above will be explained below with reference to FIGS. 1, 2, and 3.

First, Figure 1 shows an internal perspective view seen from the front of the main unit, and Figure 2 shows
The figure shows a side view of the same, and FIG. transformer 9
A centrifugal fan 7 is attached to the top of the high voltage transformer 9.
By arranging this, the cold air pumped by the centrifugal fan from the intake port 15 cools the high voltage transformer 9 as shown by the arrow in FIG. 2, and is sucked into the centrifugal fan 7. Furthermore, the cold air discharged from the centrifugal 6 Heno fan 7 passes through the air guide 8 and cools the magnetrons 5 and 6 separately.
It passes through exhaust guides 11 and 12 housed in 6 and is discharged to the outside of the main body from exhaust ports 13 and 14 provided on the back side of the main body. By arranging another high-pressure transformer 10 near the exhaust port 14b provided at the lower part of the back side of the main body, and arranging the propeller fan 17 and fan motor 18 on the front side of the main body of the high-pressure transformer 10, the centrifugal fan 7 A part of the pumped cold air is blown onto the high voltage transformer 10 using the propeller fan 17 and the fan sweater 18, and the high voltage truck 10
After being cooled, it is discharged to the outside of the main body through the exhaust port 14b.

As described above, according to this embodiment, by using the centrifugal fan 7 and the propeller fan 18, the two magnetrons 5
・62 high-voltage transformers 9 and 10 can be efficiently cooled, and costs can be significantly reduced compared to using two centrifugal fans. 9/10 Centrifugal fan 7, propeller fan 18
can be arranged on one side of the heating chamber 7.＼-5.1, and by reducing the volume of the main body, the cost of materials for the main body can be significantly reduced.

Effects of the Invention As described above, the present invention includes two magnetrons and a centrifugal fan for cooling the two magnetrons, a high voltage transformer is provided below the centrifugal fan, and the high voltage transformer is Provide an intake port nearby. By placing a high-pressure transformer separate from the above-mentioned high-pressure transformer near the exhaust port, and providing a cooling propeller fan for the high-pressure transformer on the intake port side of this high-pressure transformer, two magnetrons and two high-pressure transformers can be used efficiently. By using a propeller fan for cooling, a large cost reduction can be achieved, and all of the power supply parts mentioned above can be placed on one side of the heating chamber, reducing the volume of the main unit, which greatly reduces the material cost of the main unit. Cost can be reduced.

[Brief explanation of the drawing]

Fig. 1 is an internal perspective view of the cooling structure of the high-frequency heating manufacturing apparatus according to the embodiment of the present invention, as seen from the front of the main body, Fig. 2 is a side view of the same, Fig. 3 is a front view of the same, and Fig. 4 is a conventional FIG. 3 is an internal perspective view of the cooling structure of the high-frequency heating device as seen from the back side of the main body. 1... Heating chamber, 5, 6... Magnetron, 7...°゛° centrifugal fan, 9, 10...
High voltage transformer, 17... Propeller fan. Name of agent: Patent attorney Toshio Nakao and one other person. /--Ichibakuchi number i 5, Otsu-Magnetron 71 Sui-H s-Fan q, to-part Takashi transformer//, /2--Zotoki λY Fig. 1 17- Propeller Fan Figure 2 Figure 3

Claims (1)

[Claims] A heating chamber that stores and heats the object to be heated, two magnetrons that supply microwaves into this heating chamber, and upper and lower portions of the heating chamber that guide high frequency energy generated from the two magnetrons to the heating chamber. and a centrifugal fan for cooling the two magnetrons, a first high voltage transformer is provided below the centrifugal fan, and an intake port is provided near the first high voltage transformer. A cooling device for a high-frequency heating device, characterized in that a second high-pressure transformer is provided near the exhaust port, and a cooling propeller fan for the high-pressure transformer is provided on the intake port side of the second high-pressure transformer.